Will Poulter and Lucy Boynton star as Bobby Jones and Frankie Derwent in the 2022 ITV adaptation of Agatha Christie’s ‘Why Didn’t They Ask Evans??’.
Main cast
- Bobby JonesWill PoulterMain
- Lady Frances ‘Frankie’ DerwentLucy BoyntonMain
- Roger Bassington-ffrenchMiles JuppMain
Supporting cast
- Dr. ThomasJonathan JulesSupp
- Mildred Bassington-ffrenchEmma ThompsonSupp
- Lady MarchamRebecca FrontSupp
- Lord MarchamAlistair PetrieSupp
- Moira NicholsonMaeve DermodySupp
- Catherine ‘Cathy’ Bassington-ffrenchConleth HillSupp
- InspectorPaul WhitehouseSupp
Guest & voice
- Henry Bassington-ffrenchNigel PlanerGuest
- Mrs. RivingtonSian PhillipsGuest
- Dr. NicholsonDaniel IngsGuest
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About this cast
This 2022 three-part ITV series adapts Agatha Christie’s 1934 novel. Will Poulter and Lucy Boynton lead as amateur sleuths Bobby Jones and Lady Frances ‘Frankie’ Derwent, who investigate a mysterious death on a Welsh cliffside.
FAQs
Who plays Bobby Jones in Why Didn’t They Ask Evans??
Will Poulter plays Bobby Jones, the vicar’s son who discovers a dying man on a cliff.
Who plays Frankie Derwent in Why Didn’t They Ask Evans??
Lucy Boynton plays Lady Frances ‘Frankie’ Derwent, Bobby’s adventurous friend and co-investigator.
Is Why Didn’t They Ask Evans? a film or TV series?
It is a three-part TV series, first broadcast on ITV in the UK in April 2022.
Where was Why Didn’t They Ask Evans? filmed?
Filming took place in Wales and England, including locations in Snowdonia and the Lake District.
Who wrote the screenplay for Why Didn’t They Ask Evans??
The screenplay was written by Hugh Laurie, who also directed the series.
Sources & where to watch: IMDb · Wikipedia · Where to watch (JustWatch UK) · Updated June 2026